Year FourseamSinkerChangeCurve
2010 -1.82 -1.86 -1.91 -1.80
2011 -1.79 -1.85 -1.85 -1.78
2012 -1.76 -1.77 -1.86 -1.74
2013 -1.42 -1.55 -1.52 -1.41